I am concerned about the Himalayan Balsam gradually spreading down the canal at Titchfield towards the sea. As far as I know it hasn’t spread south of the bridge in Bridge Street. I contacted the Haven last year and they just asked me to pull up all that I could see (and reach).
Although it is very pretty in flower it is such an invasive plant that it will kill off all the native plants. This afternoon I have pulled up a dozen new young plants from the bottom of my garden alongside the canal. I don’t know how this can be controlled apart from destroying it. Perhaps it doesn’t matter? But I feel worried.